Telephone-receiver.



TELEPHONE RECEIVER.

APPLlcATloN FILED JUNE 3, 191? Patented Nov. 2'?, mi?.

ALEXANDER POLOUIVIRDVINOFF, 0F PETROGRAD, RUSSIA. I

TELEPHONE-RECEIVER.

Speccation of Letters Patent.

Patented Nov. 2*?, ilglt.

Application led I une 3, 1912. Serial No. 701,194.

To 'nl 'uv/tom it may Concern:

Be it known'that I, ALEXANDER Ponen- MoRDvrNorr, subject of the Emperor of Russia, and resident of Petrograd, Russia, engineer, have invented new and useful Improvements in Telephone-Receivers, of which the following is a specification.

My invention relates generally to telephone receivers and, more specifically, it is directed to new and useful improvements whereby the operation of such receiversis rendered more eflicient and satisfactory.

Reference is to be had to the accompanying drawings, forming part of this speciiication, in which similar characters of reference denote corresponding parts in all the views, and in which- Figure 1 is a side view of a receiver involving a polarized diaphragm actuating mechanism; and

Fig. 2 is a plain view thereof.

ln Figs. l and 2 I have shown a telephone embodying a polarized armature a movably mounted on suitable devices such as knife edges o; the armature is actuated by the magnetic field due to the electromagnet made up of the horseshoe core c having the windings c1, c2 thereon.

rlthe telephone comprises a diaphragm or a membrane Ma: positioned within a flat chamber or box o, being mounted between flexible elements, such as rings 1, 2; one

side of the box is provided with an opening and a tube P is extended therefrom in order to conduct the sound waves set up by the vibrating diaphragm, the tube being adapted to receive other tubes adapted to be positioned adjacent the ears.

rllhe armature a transmitsthe vibrations thereof to the diaphragm Ma through the medium of two tine wires l, 2, in engagement with opposite sides of the diaphragm by means of wires 3, 4:, the box or casing o being provided with suitable openings through which the wires may extend.

The vibrations of the membrane or diaphragm will be increased in degree as compared with the vibrations of the armature a depending on the angle between the wires l, 2, and the wires, 3, 4;, at the points of connection. The wires l, 2, are secured to suitable stems h1, h2, carried by the cross bar 8 preferably fixed to the top of the box or casing o, the wires being adjustable through the medium of screws f1, f2, which are essentially disks, the stems being provided with slots into which the disks engage so that elevation of the screws will elevate the stems, thereby placing the wires under greater tension.

The core c of the electromagnet which actuates the armature a is polarized in any suitable'well-known manner, being preferably mounted on one end of the core A2 of the elcctromag'net E, the other cud of the core A, supporting the said movable armature a. The electromagnet E is in circuit with a suitable battery; the box or chamber o ispreferably mounted on the upper arm A, of this electromagnet, being` secured in position by means of a suitable plate 6, as shown particularly in Fig. l.

Having thus described my invention, I

claim as new, and desire to secure by Letters Patent l. In a telephone system, a telephone receiver having an oscillating polarized armature, a membrane, connections between the membrane and the armature for vibrating the latter, said connections comprising wires secured to the ends of the armature, the opposite ends of the wires being secured to rigid supports, and branch wires secured to the iirst named wires and to the membrane.

2. ln a telephone system, a telephone receiver having' an oscillating polarized armature, a membrane, connections between the membrane and the armature for vibrating the latter, said connections comprising wires secured to the ends of the armature, the opposite ends of the wires being secured to rigid supports, branch wires secured to said lirst named wires and to the membrane, and means for exerting tension on said branch wires through said first named wires.

3. In a telephone system, a receiver having a polarized oscillating armature, a membrane, a support, adjusting members carried by said support, wires connecting each end of said armature with one of said adjusting members, branch wires connecting said first named wires with said membrane, and means for moving said adjusting members to increase or decrease the tension of the first mentioned wires.

4:. A telephone receiver comprising a casing, a membrane disposed within said casing, a polarized armature pivotally carried outside of said casing, the plane of the armature being at right angles to the plane of the membrane, a wire connecting each end of said polarized armature, said conlUti neeting wires being on the opposite Side of name to this specification in the presence the membrane, a tension adjusting member of tWo subscribing Witnesses.

iol' each wvne, eonnected at the opposite end ALEXANDER PLOUMORDVINOFE of the Wne from the armature, and con- 1 neotions 0n each side of said membrane to Vtnesses:

intermediate points of said Wires. H. A. LOVIAGUNE,

In testimony whereof, I have Signed my A. N. TSGHEXALOFF.

Copies of this patent may be obtained for five cents each, by addressing the "Commissioner of PatentsI Washington, D. C." 

